void bzero (void * dest, unsigned int size);
void memmove (void * dest, void * src, unsigned int size);
void memcpy (void *dest, void * src, unsigned int size);
int strcmp (void * s1, void * s2);
void strncpy (void * dest, void * src, unsigned int size);

#define MAGIC_OK(magic) (magic == BISCUIT_MAGIC)